Help me with format sizes...

Discussion in 'Medium Format Cameras and Accessories' started by david b, Jan 3, 2006.

  1. david b

    david b Member

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    I am trying to figure something out with 120 film.

    Please fill in the blanks.

    6x4.5 = 16 shots

    6x6 = 12 shots

    6x7 = 10 shots

    6x8 =

    6x9 = 8 shots

    6x12 = 6 shots

    6x17 = 4 shots
     
  2. Nick Zentena

    Nick Zentena Member

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    Or 15 shots. The older Pentax 645 is 15 IIRC. The newer models 16.

    8
    6
    4? I think.
     
  3. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member Moderator

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    Yes, 6x17 is 4.

    Tom Sauerwein shoots 6x8, so he'll know that one.
     
  4. david b

    david b Member

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    What cameras, aside from Fuji, are 6x8 ?
     
  5. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member Moderator

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    Fuji made a 6x8 rangefinder as well as the GX680 SLR.

    Mamiya makes a motorized 6x8 back for the RB that can also be used on the Alpa. It gets 9 exposures.
     
  6. MikeK

    MikeK Member

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    There is also 4cmx4cm (really 3.8x3.8) superslide format giving 16 images on 120 film

    Mike
     
  7. smieglitz

    smieglitz Subscriber

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    And the original Diana camera box I'm staring at says it "takes 16 colour or black/white images with 120 roll film." These images are also 4cm x 4cm.

    Joe
     
  8. Peter Williams

    Peter Williams Member

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    I shoot with the Fuji GX680 and I get 9 shots per 120 roll.
     
  9. medform-norm

    medform-norm Member

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    Aren't we forgetting some sizes?

    6x14= (5?)
    6x24= (2 or 3?)

    6x24 is with an art panorama, 6x14 was on a...

    okay, here's a thread to eat your heart out:
    http://medfmt.8k.com/mf/formats.html
     
  10. srs5694

    srs5694 Member

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    The Russian Horizon 205pc is 5.5x11cm, at least according to the seller Web site I just referenced. Maybe they're just measuring it differently and that's the 6x12 format that's already been mentioned, though. (I don't have one of these cameras, so I can't offer any personal observations.) Unless I missed it, the site doesn't say how many exposures to expect per roll.
     
  11. Donald Qualls

    Donald Qualls Member

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    And let's not forget that obscure 120 camera (the name has escaped me at the moment) that uses half-frame (cropped top and bottom) on the 6x6 track to give 24 3x4 exposures -- similar frame size to 127 half frame, but oriented sidewise on the 120 roll.

    And if you can ever find one, a 6x23 will give 3 exposures on a 120 roll. I'm working on building a pair (for pinhole)...
     
  12. Wimpler

    Wimpler Member

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    I have an AGFA isolette L which is able to shoot 6x6 and 6x3 (60mmx30-32mm). For those who want to know more about it: it uses a mask attached to the camera, has a viewfinder correction, double exposure prevention and even has a light meter (which works on my example).
     
  13. Troy Ammons

    Troy Ammons Member

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    I think there was a 6x8 back made for the RB pro-S.
     
  14. Jimi

    Jimi Member

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    My Mamiya M645 exposes only 15 shots too...
     
  15. Donald Qualls

    Donald Qualls Member

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    Well, don't forget some of the earlier Ziess 6x6 folders with automatic frame counters got only 11 on a roll, too.
     
  16. Donald Qualls

    Donald Qualls Member

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    Is that a factory job? I've seen (pictures of) a couple of the older bakelite-top Isolettes that could do both 6x6 and 6x4.5, with three windows (one in center for 6x6, two on the 6x9 track for 6x4.5, since 120 didn't reliably have 16-on framing tracks when those came out) -- but I've never seen or heard of an Isolette that could do narrower frames. It'd be an easy conversion, as such things go; masks that pivot on the pin rollers and store in the film compartments, and a little rotating mask in the viewfinder, plus a second window at the takeup edge of the frame gate. It wasn't particularly uncommon to see cameras converted to conserve film in the years just after WWII.
     
  17. Wimpler

    Wimpler Member

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    It was certainly a factory job as every isolette L has it. But it is pretty much as you thought it would be. Except for the fact that it has 1 single red window for film numbers. I'v seen instructions on the net on how to advance properly for the smaller format using the dots between the numbers on the paper back.

    It has a top plate specifically made for the camera with a lever to flip the viewfinder mask.
     
  18. Donald Qualls

    Donald Qualls Member

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    Very interesting, Wimpler. I'd measure those mask flaps -- they're more likely to be for 6x4.5 than 6x3, and your camera probably has had the back switched. The Isolette model that had the 6x4.5 masks and VF mask had two windows, one in the center at one at the bottom (for the 6x4.5 track that was on all all 120 film by 1953 or so). These were all Bakelite top plate cameras, AFAIK...
     
  19. Wimpler

    Wimpler Member

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    http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=007TC4

    McKeown is wrong about it

    I am pretty damn sure it really is a factory job and that everything stated otherwise is coming from a guide that is wrong.

    I did find a website on the insolette L somewhere but can't find it anymore. I did measure the flaps myself and it is 60mm x 30-32 mm
     
  20. Donald Qualls

    Donald Qualls Member

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    Cool. Still not sure I understand the usefulness of a 6x3 frame, other than to save film, and I *really* don't get why they wouldn't at least give a dual window (that other 4x3 on 120 camera gives that; advance like 6x4.5 in a masked 6x9).

    And this is *vertical*? Very, very strange...
     
  21. Wimpler

    Wimpler Member

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    I think it is rather inventive. Its is halfframe 6x6 instead of halfframe 6x9 :wink: Just like my olympus pen EE cameras are halfframe 35mm.

    I think it is quite amazing that you can make 24 high quality "panoramic" images with it on just 1 roll of 120 film.

    Winding with one window shouldn't be a problem, you just have to know which dot to stop at between the dots that have numbers... I think 4.5x6 uses another system because there isn't a dot at the exact right place on the backing paper. Not sure about this.